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Storage and loss stiffnesses and moduli as determined by dynamic nanoindentation

Published online by Cambridge University Press:  31 January 2011

Wendelin J. Wright  and
W.D. Nix
Wendelin J. Wright*
Affiliation:
Santa Clara University, Department of Mechanical Engineering, Santa Clara, California 95053
W.D. Nix
Affiliation:
Stanford University, Department of Materials Science and Engineering, Stanford, California 94305
*
a) Address all correspondence to this author. e-mail: wwright@scu.edu.
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Abstract

The storage and loss stiffnesses for the composite response of the sample, indenter, and load frame during dynamic nanoindentation are derived. In the first part of the analysis, no physical model is assigned to the composite system. It is shown that this case is equivalent to the conventional nanoindentation analysis. In the second part of the analysis, the sample is modeled as a standard linear solid in series with the indenter and load frame. The results for the storage and loss stiffnesses as computed by the two methods differ by at most ∼3% for the elastomeric system under consideration. Results for the storage and loss moduli are also similar. The relative merits and weaknesses of each analysis are discussed.

Keywords

Nanoindentation
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 3 , March 2009 , pp. 863 - 871
Copyright
Copyright © Materials Research Society 2009

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References

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